Results 81 to 90 of about 83,038 (344)

Synthesis of cyclopropyl-substituted furans by Brønsted acid promoted cascade reactions [PDF]

, 2015
Chloroacetic acid promotes an efficient and diastereoselective intramolecular cascade reaction of electron-deficient ynenones to deliver products featuring a 2,3,5-trisubstituted furan bearing a fused cyclopropyl substituent at the 5-position ...
Achmatowicz, Albrecht, Barluenga, Benary, Boto, Casey, Ciufolini, Clark, Corma, Csuk, Csuk, Donaldson, Donohoe, Fedoryński, Feist, Fritz, Gandini, Gilchrist, González, González, Hashmi, Hou, Högberg, Jung, Knorr, Kobayashi, Krasnaya, Kuroda, Lebel, Li, Li, Lipshutz, Ma, MacMillan, Paal, Pellissier, Ripaud, Sperry, Vicente, Wang, Wessjohann, Wipf, Wu, Xia, Yang, Zhang, Zimmerman   +46 more
core   +2 more sources

First diastereoselective total synthesis of bicyclic styryl lactone: (1R,5R,7R)-7-((E)-styryl)-2,6-dioxabicyclo[3.3.1]nonan-3-one

Results in Chemistry, 2023
A concise and facile diastereoselective first total synthesis of bicyclic styryl lactone 1 is described in nine steps. This biologically active bicyclic styryl lactone was obtained in 8% overall yield from cinnamaldehyde 2 and (R)-3-hydroxyhex-5-enoic ...
Dhanraj O. Biradar, Yogesh D. Mane, A.V. Narsaiah, B.V. Subba Reddy   +3 more
doaj   +1 more source

Preparation of 4 '-spirocyclobutyl nucleoside analogues as novel and versatile adenosine scaffolds

, 2019
Despite the large variety of modified nucleosides that have been reported, the preparation of constrained 4 '-spirocyclic adenosine analogues has received very little attention.
De Vleeschouwer, Freija, Kong, Hanchu, Meerpoel, Lieven, Pande, Vineet, Sun, Weimei, Thuring, Jan Willem, Van Hecke, Kristof, Verhoeven, Jonas, Verniest, Guido, Vos, Ann, Wu, Tongfei   +10 more
core   +1 more source

Transferring Axial Molecular Chirality Through a Sequence of On-Surface Reactions

, 2020
Fine management of chiral processes on solid surfaces has progressed over the years, yet still faces the need for the controlled and selective production of advanced chiral materials.
Berdonces-Layunta, Alejandro, Castro-Esteban, Jesús, Colazzo, Luciano, de Oteyza, Dimas G., Lawrence, James, Merino-Díez, Néstor, Mohammed, Mohammed S. G., Pascual, J. Ignacio, Peña, Diego   +8 more
core   +1 more source

Ferrocene-derived P,N ligands : synthesis and application in enantioselective catalysis [PDF]

, 2013
Due to their unique steric and electronic properties, air-stability and modular structure, chiral hybrid P,N-ferrocenyl ligands play a prominent role in the field of asymmetric catalysis.
Noël, Timothy, Van der Eycken, Johan
core   +1 more source

Ti-MCM-41 materials synthesised at room temperature as catalysts for cyclisation of (±)-citronellal” [PDF]

, 2009
In the present work we extend the applicability of those Ti-MCM-41 materials, as heterogeneous catalysts, to produce an important intermediate, isopulegol, from the cyclisation of citronellal. The use of this kind of materials appears to be a good option
Carrott, Manuela, Carrott, Peter, Castilho, P., Galacho, Cristina, Ramos, S.S., Rodrigues, A.I.   +5 more
core  

The diastereoselective Meth-Cohn epoxidation of camphor-derived vinyl sulfones [PDF]

, 2012
Some camphor-derived vinyl sulfones bearing oxygen functionality at the allylic position have been synthesized and their nucleophilic epoxidation reactions under Meth-Cohn conditions have been explored.
Adam, Adamczyk, Adams, Aggarwal, Alba, Armstrong, Armstrong, Ashwell, Ashwell, Back, Bailey, Bos, Bos, Briggs, Briggs, Bueno, Bäckvall, Chemla, Christopher Meadows, Clark, Craig, Craig, Culvenor, David H. Grayson, El-Awa, Evans, Evans, Evans, Evans, Evans, Evans, Fernandez de la Pradilla, Fernandez de la Pradilla, Fernandez de la Pradilla, Fernandez de la Pradilla, Fernandez de la Pradilla, Forristal, Frank W. Lewis, Garrabou, Gnas, Gordon Hill, Hernandez, Hewkin, Jackson, Jackson, Jackson, Jackson, Jackson, Jackson, Jackson, Kurt Dolence, Lacour, Lacour, Langlois, Lewis, Lewis, Li, Liu, Llamas, Magnus, Mauleon, McLaughlin, Meggers, Meth-Cohn, Milen, Mori, Mosse, Moure, Narasimha Rao, Nishide, Node, Oppolzer, Pellissier, Pinho e Melo, Pinho e Melo, Polywka, Roos, Satoh, Shu, Simpkins, Solladié-Cavallo, Solladié-Cavallo, Sulzer-Mosse, Toru, Trost, Tsogoeva, Van Rheenen, Weitz, Wessel, Yoo, Zhu, Zwanenburg   +91 more
core   +1 more source

diastereoselectivity

, 2019
Citation: 'diastereoselectivity' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.D01684 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Stereodivergent, Diels-Alder-initiated organocascades employing α,β-unsaturated acylammonium salts: scope, mechanism, and application. [PDF]

, 2017
Chiral α,β-unsaturated acylammonium salts are novel dienophiles enabling enantioselective Diels-Alder-lactonization (DAL) organocascades leading to cis- and trans-fused, bicyclic γ- and δ-lactones from readily prepared dienes, commodity acid chlorides ...
Abbasov, Mikail E, Hudson, Brandi M, Romo, Daniel, Tantillo, Dean J   +3 more
core   +2 more sources

Thiophene Derivatives as Versatile Precursors for (Hetero)Arene and Natural Product Synthesis

Angewandte Chemie International Edition, EarlyView.
Hidden but Powerful: Thiophenes and their saturated analogues have been demonstrated to be versatile C4‐building blocks that can be rapidly applied to natural product synthesis and the construction of functionalized (hetero)arenes. This minireview aims to provide a concise overview of the strategies and implementations of these sulfur‐containing ...
Anna Keimer, Franz‐Lucas Haut
wiley   +1 more source